medden



(NoModeL) HEATER.

June 28, 1887;

Patented N. PLI'ERS. rmmlnhi n hw. wan mm. n. c.

2 t e e h S m e e h S 2 m H mu Mm E (No Model.)

7 No. 365,618. Patented June 28, 1887.

I 1 UNITED STATES PATENT OFFICE.

EDWIN MEDDEN, OF SENECA FALLS, NEW YORK, ASSIGNOR TO THE SILSBYMANUFACTURING COMPANY, OF SAME PLACE.

HEATER.

SPECIFICATION forming part of Letters Patent No. 365,618, dated June 28,1887 Application filed March 12, 18 87. Serial No. 230,665. (No model.)

To all whom, it may concern:

Beit known that I, EDWIN MEDDEN, a citizen of the United States,residing at Seneca Falls, in

the county of Seneca and State of New York,

5 have invented certain new and useful Improvements in Heaters, of whichthe following is a specification.

The invention relates to that class of heaters which are designed tocause a circulation of steam or hot water through a system of pipes andradiators for heating the rooms of abuilding; and it consists in certainfeatures of novelty, which are hereinafter particularly pointed outinthe claim,being first fully described with reference to the accompanyingdrawings, in

which-- Figure I is an elevation showing the heater, the radiators, andthe circulating-pipe connect ing them, so as to form'a complete circuit,the

2 0 radiators being situated in the several apartments of a building.Fig. II is a View on a larger scale, illustrating the heater, some ofthe parts being shown in vertical section and others in elevation. Fig.III isa horizontal sec- 2 5 tion on the line III III, Fig. II.

A represents the outer, and B the inner, wall of the casing,the wallsbeing placed at such distance apart as to leave the necessary annularspace 0, for the circulation of the water. This spaceextends far downaround the combustionchamber and fire-box, and at top is enlarged byforming an offset in the inner wall, B, so that it extends inward,overhanging the combustion chamber.

55 Dis the fuel-magazine, which projects downward within the casing ofthe heater, terminating at the fire-box, its upper end beingcovered by acap or cover, E, of any suitable construction. The magazine is of suchsize as 40 to leave an annular space, F, between it and the inner wall,B, of the casing for the passage of the smoke and spent products ofcombustion from the combustion-chamber to the smokedome G, whence itescapes by a flue, H. 5 I represents any desired number of large pipesor drums, constituting water-legs, situated within thecombustionchamber, each of which is closed at each end bya plate orhead, i,having perforations for the reception of the 5o extremities ofopen-end tubes K, the tubes being secured within the perforations byexpanding-a method well understood in the art. The tubes K are open atboth ends, and are designed for the passage of heat for heating thewater contained within the drums I, each of which is connected with thewater-space O at top and bottom by short pipes L and M, respectively. Itwill be observed that as the temperature of the water within the drum Iis elevated it rises and escapes into the upper part of the water-space0 through the pipes L, its place being filled by the induction of waterfrom the bottom of the water-space through the pipes M. A constantcirculation is thus kept up within theheater,enablingalargcbody of waterto be maintained at a very high tem-' 'perature.

N is a pipe (herein called the circulatingpipe) which communicates atits extremities with the water-space O at top and bottom, respectivel y,it being in communication at intermediate points with any desired numberof. radiators, 0, located in any desired parts of the building. It willbe seen that if'water be employed as the circulating medium the hotwater in the spaceG will rise through that branch of thecirculating-pipe N which communicates with the top of the heater, itsplace being filled by the induction of water from that-end of thepipewhich communicates with the heater at the bottom. If steam beemployed as the circulating medium, it will rise through that branch ofthe pipe Nwhich communicates with the water-space G at top, the

major part of the water of condensation being returned through thatbranch which communicates with the water-space at the bottom.

A constant circulation may thus be kept up through the circulating-pipeN, radiators O, and water-space 0, subject to control by valves or cocksarranged in any desired manner.

If desired, the number of circulating-pipes may be increased and thenumber of radiators placed in each circuit reduced. 7

Having thus described my invention, what I claim as new therein, anddesire to secure by Letters Patent, is-- The combination, with theradiators O and the pipe N, with which they communicate, of

the heater having the annular water-chamber T00 v O, with which theextremities of said pipe communicate at top and bottom, respectively,

said chamber being so constructed that its top part will project inwardover the eombustioir chamber, while its lower part extends downwardaround the same, the water-drums I, situated within thecombustionchamber and at sufficient distance from the inner wall of thewater-chamber to allow free circulation of hot air around them, theopen-end tubes K, eXtemL iug through said drums and communicating atboth ends with the combustionchamber, the short pipes L, formingconnnunication between the u pperends of said drums and theinwardlyprojeoting portion of the watcnchamber, the pipes M, formingcommunication between the lower ends of said drums and the lower portionof the water-chamber, the coal-magazine opening at the top of the heaterand projecting downward within the combustion-chamber to about the lowerends of the drums, said magazine being of such diameter as to leave anannular space, F, between it and the inner wall, B, of the water-chamberfor the passage of the products of combustion, the sn1oke-don1e G- abovethe chamber 0, and the flue H, coninlunicating with Said smokedome,substantially as and for the purpose set forth.

I EDWIN MEDDEN. Witnesses:

WILLIAM IT. 0001:, BENJAMIN R. HALL.

